Auto merge of #53815 - F001:if-let-guard, r=petrochenkov

[rust.git] / src / libsyntax / ast.rs

diff --git a/src/libsyntax/ast.rs b/src/libsyntax/ast.rs
index bd0e0d277ee54e932518e45178ba664190a8c3cb..72f1791ef7c0f995d285a3502a9cb4d230820fd8 100644 (file)
--- a/src/libsyntax/ast.rs
+++ b/src/libsyntax/ast.rs
@@ -857,10 +857,15 @@ pub struct Local {
 pub struct Arm {
     pub attrs: Vec<Attribute>,
     pub pats: Vec<P<Pat>>,
-    pub guard: Option<P<Expr>>,
+    pub guard: Option<Guard>,
     pub body: P<Expr>,
 }
 
+#[derive(Clone, RustcEncodable, RustcDecodable, Debug)]
+pub enum Guard {
+    If(P<Expr>),
+}
+
 #[derive(Clone, RustcEncodable, RustcDecodable, Debug)]
 pub struct Field {
     pub ident: Ident,